51605760615 has 8 divisors (see below), whose sum is σ = 82569217008. Its totient is φ = 27523072320.

The previous prime is 51605760607. The next prime is 51605760653. The reversal of 51605760615 is 51606750615.

51605760615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51605760615 - 2³ = 51605760607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1720192006 + ... + 1720192035.

It is an arithmetic number, because the mean of its divisors is an integer number (10321152126).

Almost surely, 2^51605760615 is an apocalyptic number.

51605760615 is a deficient number, since it is larger than the sum of its proper divisors (30963456393).

51605760615 is a wasteful number, since it uses less digits than its factorization.

51605760615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440384049.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 51605760615 in words is "fifty-one billion, six hundred five million, seven hundred sixty thousand, six hundred fifteen".